/*
* Note: we hold the dentry use count while the file is open.
*/
static u32
nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp)
{
u32 nfserr;
struct svc_fh fh;
/* must initialize before using! but maxsize doesn't matter */
fh_init(&fh,0);
fh.fh_handle.fh_size = f->size;
memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
fh.fh_export = NULL;
exp_readlock();
nfserr = nfsd_open(rqstp, &fh, S_IFREG, MAY_LOCK, filp);
fh_put(&fh);
rqstp->rq_client = NULL;
exp_readunlock();
/* nlm and nfsd don't share error codes.
* we invent: 0 = no error
* 1 = stale file handle
* 2 = nfserr_dropit (or -EAGAIN)
* 3 = other error
*/
switch (nfserr) {
case nfs_ok:
return 0;
case nfserr_stale:
return 1;
case nfserr_dropit:
return 2;
default:
return 3;
}
}
/*
* Note: we hold the dentry use count while the file is open.
*/
static __be32
nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp)
{
__be32 nfserr;
struct svc_fh fh;
/* must initialize before using! but maxsize doesn't matter */
fh_init(&fh,0);
fh.fh_handle.fh_size = f->size;
memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
fh.fh_export = NULL;
exp_readlock();
nfserr = nfsd_open(rqstp, &fh, S_IFREG, NFSD_MAY_LOCK, filp);
fh_put(&fh);
exp_readunlock();
/* We return nlm error codes as nlm doesn't know
* about nfsd, but nfsd does know about nlm..
*/
switch (nfserr) {
case nfs_ok:
return 0;
case nfserr_dropit:
return nlm_drop_reply;
case nfserr_stale:
return nlm_stale_fh;
default:
return nlm_failed;
}
}
/*
* XDR functions for basic NFS types
*/
static __be32 *
decode_fh(__be32 *p, struct svc_fh *fhp)
{
fh_init(fhp, NFS_FHSIZE);
memcpy(&fhp->fh_handle.fh_base, p, NFS_FHSIZE);
fhp->fh_handle.fh_size = NFS_FHSIZE;
return p + (NFS_FHSIZE >> 2);
}
/*
* XDR functions for basic NFS types
*/
static __be32 *
decode_fh(__be32 *p, struct svc_fh *fhp)
{
fh_init(fhp, NFS_FHSIZE);
memcpy(&fhp->fh_handle.fh_base, p, NFS_FHSIZE);
fhp->fh_handle.fh_size = NFS_FHSIZE;
/* FIXME: Look up export pointer here and verify
* Sun Secure RPC if requested */
return p + (NFS_FHSIZE >> 2);
}
static inline u32 *
decode_fh(u32 *p, struct svc_fh *fhp)
{
int size;
fh_init(fhp, NFS3_FHSIZE);
size = ntohl(*p++);
if (size > NFS3_FHSIZE)
return NULL;
memcpy(&fhp->fh_handle.fh_base, p, size);
fhp->fh_handle.fh_size = size;
return p + XDR_QUADLEN(size);
}
static void test_nfsfh(void){
dev_t dev=0;
u32 unfs=0, u32ptr[2];
ino_t ino=0;
struct svc_fh A1;
int i=20;
u32_to_dev_t((__u32)unfs);
ino_t_to_u32(ino);
u32_to_ino_t((__u32)unfs);
mk_fsid_v0(u32ptr, dev, ino);
mk_fsid_v1(u32ptr, unfs);
SVCFH_fmt(&A1);
fh_init(&A1,i);
fh_lock(&A1);
fh_unlock(&A1);
printk("finished nfsfh test\n");
}
static __be32 *encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, int namlen, u64 ino)
{
struct svc_fh *fh = &cd->scratch;
__be32 err;
fh_init(fh, NFS3_FHSIZE);
err = compose_entry_fh(cd, fh, name, namlen, ino);
if (err) {
*p++ = 0;
*p++ = 0;
goto out;
}
p = encode_post_op_attr(cd->rqstp, p, fh);
*p++ = xdr_one; /* yes, a file handle follows */
p = encode_fh(p, fh);
out:
fh_put(fh);
return p;
}
/*
* With NFSv3, CREATE processing is a lot easier than with NFSv2.
* At least in theory; we'll see how it fares in practice when the
* first reports about SunOS compatibility problems start to pour in...
* N.B. After this call _both_ resp->dirfh and resp->fh need an fh_put
*/
static int
nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
struct nfsd3_createres *resp)
{
svc_fh *dirfhp, *newfhp = NULL;
struct iattr *attr;
int mode;
u32 nfserr;
dprintk("nfsd: CREATE %x/%ld %s\n",
SVCFH_DEV(&argp->fh),
SVCFH_INO(&argp->fh),
argp->name);
dirfhp = fh_copy(&resp->dirfh, &argp->fh);
newfhp = fh_init(&resp->fh);
attr = &argp->attrs;
/* Get the directory inode */
nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, MAY_CREATE);
if (nfserr)
RETURN(nfserr);
/* Unfudge the mode bits */
attr->ia_mode &= ~S_IFMT;
if (!(attr->ia_valid & ATTR_MODE)) {
attr->ia_valid |= ATTR_MODE;
attr->ia_mode = S_IFREG;
}
mode = attr->ia_mode & ~S_IFMT;
/* Now create the file and set attributes */
nfserr = nfsd_create(rqstp, dirfhp, argp->name, argp->len,
attr, S_IFREG, 0, newfhp);
RETURN(nfserr);
}
int
holding_file_get_dumpfile(
char * fname,
dumpfile_t *file)
{
char buffer[DISK_BLOCK_BYTES];
int fd;
memset(buffer, 0, sizeof(buffer));
fh_init(file);
file->type = F_UNKNOWN;
if((fd = robust_open(fname, O_RDONLY, 0)) == -1)
return 0;
if(read_fully(fd, buffer, sizeof(buffer), NULL) != sizeof(buffer)) {
aclose(fd);
return 0;
}
aclose(fd);
parse_file_header(buffer, file, sizeof(buffer));
return 1;
}
static int
encode_entry(struct readdir_cd *cd, const char *name,
int namlen, off_t offset, ino_t ino, unsigned int d_type, int plus)
{
u32 *p = cd->buffer;
int buflen, slen, elen;
if (cd->offset)
xdr_encode_hyper(cd->offset, (u64) offset);
/* nfsd_readdir calls us with name == 0 when it wants us to
* set the last offset entry. */
if (name == 0)
return 0;
/*
dprintk("encode_entry(%.*s @%ld%s)\n",
namlen, name, (long) offset, plus? " plus" : "");
*/
/* truncate filename if too long */
if (namlen > NFS3_MAXNAMLEN)
namlen = NFS3_MAXNAMLEN;
slen = XDR_QUADLEN(namlen);
elen = slen + NFS3_ENTRY_BAGGAGE
+ (plus? NFS3_ENTRYPLUS_BAGGAGE : 0);
if ((buflen = cd->buflen - elen) < 0) {
cd->eob = 1;
return -EINVAL;
}
*p++ = xdr_one; /* mark entry present */
p = xdr_encode_hyper(p, ino); /* file id */
p = xdr_encode_array(p, name, namlen);/* name length & name */
cd->offset = p; /* remember pointer */
p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */
/* throw in readdirplus baggage */
if (plus) {
struct svc_fh fh;
struct svc_export *exp;
struct dentry *dparent, *dchild;
dparent = cd->dirfh->fh_dentry;
exp = cd->dirfh->fh_export;
fh_init(&fh, NFS3_FHSIZE);
if (isdotent(name, namlen)) {
dchild = dparent;
if (namlen == 2)
dchild = dchild->d_parent;
dchild = dget(dchild);
} else
dchild = lookup_one_len(name, dparent,namlen);
if (IS_ERR(dchild))
goto noexec;
if (fh_compose(&fh, exp, dchild, cd->dirfh) != 0 || !dchild->d_inode)
goto noexec;
p = encode_post_op_attr(cd->rqstp, p, &fh);
*p++ = xdr_one; /* yes, a file handle follows */
p = encode_fh(p, &fh);
fh_put(&fh);
}
out:
cd->buflen = buflen;
cd->buffer = p;
return 0;
noexec:
*p++ = 0;
*p++ = 0;
goto out;
}
void
parse_file_header(
const char *buffer,
dumpfile_t *file,
size_t buflen)
{
char *buf, *line, *tok, *line1;
size_t lsize;
char *uqname;
int in_quotes;
char *saveptr = NULL;
/* put the buffer into a writable chunk of memory and nul-term it */
buf = alloc(buflen + 1);
memcpy(buf, buffer, buflen);
buf[buflen] = '\0';
fh_init(file);
/* extract the first unquoted line */
in_quotes = 0;
for (line = buf, lsize = 0; lsize < buflen; line++) {
if ((*line == '\n') && !in_quotes)
break;
if (*line == '"') {
in_quotes = !in_quotes;
} else if ((*line == '\\') && (*(line + 1) == '"')) {
line++;
lsize++;
}
lsize++;
}
*line = '\0';
line1 = alloc(lsize + 1);
strncpy(line1, buf, lsize);
line1[lsize] = '\0';
*line = '\n';
tok = strtok_r(line1, " ", &saveptr);
if (tok == NULL) {
g_fprintf(stderr, _("%s: Empty amanda header: buflen=%zu lsize=%zu\n"), get_pname(),
buflen,
lsize);
hexdump(buffer, lsize);
strange_header(file, buffer, buflen, _("<Non-empty line>"), tok);
goto out;
}
if (strcmp(tok, "NETDUMP:") != 0 && strcmp(tok, "AMANDA:") != 0) {
amfree(buf);
file->type = F_UNKNOWN;
amfree(line1);
return;
}
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<file type>"), tok);
goto out;
}
file->type = str2filetype(tok);
switch (file->type) {
case F_TAPESTART:
tok = strtok_r(NULL, " ", &saveptr);
if ((tok == NULL) || (strcmp(tok, "DATE") != 0)) {
strange_header(file, buffer, buflen, "DATE", tok);
goto out;
}
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<date stamp>"), tok);
goto out;
}
strncpy(file->datestamp, tok, SIZEOF(file->datestamp) - 1);
tok = strtok_r(NULL, " ", &saveptr);
if ((tok == NULL) || (strcmp(tok, "TAPE") != 0)) {
strange_header(file, buffer, buflen, "TAPE", tok);
goto out;
}
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<file type>"), tok);
goto out;
}
strncpy(file->name, tok, SIZEOF(file->name) - 1);
break;
case F_DUMPFILE:
case F_CONT_DUMPFILE:
case F_SPLIT_DUMPFILE:
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<date stamp>"), tok);
goto out;
}
strncpy(file->datestamp, tok, SIZEOF(file->datestamp) - 1);
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<file name>"), tok);
goto out;
}
strncpy(file->name, tok, SIZEOF(file->name) - 1);
tok = strquotedstr(&saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<disk name>"), tok);
goto out;
}
uqname = unquote_string(tok);
strncpy(file->disk, uqname, SIZEOF(file->disk) - 1);
amfree(uqname);
if(file->type == F_SPLIT_DUMPFILE) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL || strcmp(tok, "part") != 0) {
strange_header(file, buffer, buflen, "part", tok);
goto out;
}
tok = strtok_r(NULL, "/", &saveptr);
if ((tok == NULL) || (sscanf(tok, "%d", &file->partnum) != 1)) {
strange_header(file, buffer, buflen, _("<part num param>"), tok);
goto out;
}
/* If totalparts == -1, then the original dump was done in
streaming mode (no holding disk), thus we don't know how
many parts there are. */
tok = strtok_r(NULL, " ", &saveptr);
if((tok == NULL) || (sscanf(tok, "%d", &file->totalparts) != 1)) {
strange_header(file, buffer, buflen, _("<total parts param>"), tok);
goto out;
}
}
tok = strtok_r(NULL, " ", &saveptr);
if ((tok == NULL) || (strcmp(tok, "lev") != 0)) {
strange_header(file, buffer, buflen, "lev", tok);
goto out;
}
tok = strtok_r(NULL, " ", &saveptr);
if ((tok == NULL) || (sscanf(tok, "%d", &file->dumplevel) != 1)) {
strange_header(file, buffer, buflen, _("<dump level param>"), tok);
goto out;
}
tok = strtok_r(NULL, " ", &saveptr);
if ((tok == NULL) || (strcmp(tok, "comp") != 0)) {
strange_header(file, buffer, buflen, "comp", tok);
goto out;
}
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<comp param>"), tok);
goto out;
}
strncpy(file->comp_suffix, tok, SIZEOF(file->comp_suffix) - 1);
file->compressed = strcmp(file->comp_suffix, "N");
/* compatibility with pre-2.2 amanda */
if (strcmp(file->comp_suffix, "C") == 0)
strncpy(file->comp_suffix, ".Z", SIZEOF(file->comp_suffix) - 1);
tok = strtok_r(NULL, " ", &saveptr);
/* "program" is optional */
if (tok == NULL || strcmp(tok, "program") != 0) {
break;
}
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<program name>"), tok);
goto out;
}
strncpy(file->program, tok, SIZEOF(file->program) - 1);
if (file->program[0] == '\0')
strncpy(file->program, "RESTORE", SIZEOF(file->program) - 1);
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break; /* reached the end of the buffer */
/* "encryption" is optional */
if (BSTRNCMP(tok, "crypt") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen, _("<crypt param>"), tok);
goto out;
}
strncpy(file->encrypt_suffix, tok,
SIZEOF(file->encrypt_suffix) - 1);
file->encrypted = BSTRNCMP(file->encrypt_suffix, "N");
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break;
}
/* "srvcompprog" is optional */
if (BSTRNCMP(tok, "server_custom_compress") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen,
_("<server custom compress param>"), tok);
goto out;
}
strncpy(file->srvcompprog, tok, SIZEOF(file->srvcompprog) - 1);
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break;
}
/* "clntcompprog" is optional */
if (BSTRNCMP(tok, "client_custom_compress") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen,
_("<client custom compress param>"), tok);
goto out;
}
strncpy(file->clntcompprog, tok, SIZEOF(file->clntcompprog) - 1);
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break;
}
/* "srv_encrypt" is optional */
if (BSTRNCMP(tok, "server_encrypt") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen,
_("<server encrypt param>"), tok);
goto out;
}
strncpy(file->srv_encrypt, tok, SIZEOF(file->srv_encrypt) - 1);
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break;
}
/* "clnt_encrypt" is optional */
if (BSTRNCMP(tok, "client_encrypt") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen,
_("<client encrypt param>"), tok);
goto out;
}
strncpy(file->clnt_encrypt, tok, SIZEOF(file->clnt_encrypt) - 1);
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break;
}
/* "srv_decrypt_opt" is optional */
if (BSTRNCMP(tok, "server_decrypt_option") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen,
_("<server decrypt param>"), tok);
goto out;
}
strncpy(file->srv_decrypt_opt, tok,
SIZEOF(file->srv_decrypt_opt) - 1);
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break;
}
/* "clnt_decrypt_opt" is optional */
if (BSTRNCMP(tok, "client_decrypt_option") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if (tok == NULL) {
strange_header(file, buffer, buflen,
_("<client decrypt param>"), tok);
goto out;
}
strncpy(file->clnt_decrypt_opt, tok,
SIZEOF(file->clnt_decrypt_opt) - 1);
if ((tok = strtok_r(NULL, " ", &saveptr)) == NULL)
break;
}
break;
case F_TAPEEND:
tok = strtok_r(NULL, " ", &saveptr);
/* DATE is optional */
if (tok != NULL) {
if (strcmp(tok, "DATE") == 0) {
tok = strtok_r(NULL, " ", &saveptr);
if(tok == NULL)
file->datestamp[0] = '\0';
else
strncpy(file->datestamp, tok, SIZEOF(file->datestamp) - 1);
} else {
strange_header(file, buffer, buflen, _("<DATE>"), tok);
}
} else {
file->datestamp[0] = '\0';
}
break;
case F_NOOP:
/* nothing follows */
break;
default:
strange_header(file, buffer, buflen,
_("TAPESTART|DUMPFILE|CONT_DUMPFILE|SPLIT_DUMPFILE|TAPEEND|NOOP"), tok);
goto out;
}
(void)strtok_r(buf, "\n", &saveptr); /* this is the first line */
/* iterate through the rest of the lines */
while ((line = strtok_r(NULL, "\n", &saveptr)) != NULL) {
#define SC "CONT_FILENAME="
if (strncmp(line, SC, SIZEOF(SC) - 1) == 0) {
line += SIZEOF(SC) - 1;
strncpy(file->cont_filename, line,
SIZEOF(file->cont_filename) - 1);
continue;
}
#undef SC
#define SC "PARTIAL="
if (strncmp(line, SC, SIZEOF(SC) - 1) == 0) {
line += SIZEOF(SC) - 1;
file->is_partial = !strcasecmp(line, "yes");
continue;
}
#undef SC
#define SC "APPLICATION="
if (strncmp(line, SC, SIZEOF(SC) - 1) == 0) {
line += SIZEOF(SC) - 1;
strncpy(file->application, line,
SIZEOF(file->application) - 1);
continue;
}
#undef SC
#define SC "DLE="
if (strncmp(line, SC, SIZEOF(SC) - 1) == 0) {
line += SIZEOF(SC) - 1;
file->dle_str = parse_heredoc(line, &saveptr);
}
#undef SC
#define SC _("To restore, position tape at start of file and run:")
if (strncmp(line, SC, SIZEOF(SC) - 1) == 0)
continue;
#undef SC
#define SC "\tdd if=<tape> "
if (strncmp(line, SC, SIZEOF(SC) - 1) == 0) {
char *cmd1, *cmd2, *cmd3=NULL;
/* skip over dd command */
if ((cmd1 = strchr(line, '|')) == NULL) {
strncpy(file->recover_cmd, "BUG",
SIZEOF(file->recover_cmd) - 1);
continue;
}
*cmd1++ = '\0';
/* block out first pipeline command */
if ((cmd2 = strchr(cmd1, '|')) != NULL) {
*cmd2++ = '\0';
if ((cmd3 = strchr(cmd2, '|')) != NULL)
*cmd3++ = '\0';
}
/* clean up some extra spaces in various fields */
chomp(cmd1);
chomp(cmd2);
chomp(cmd3);
/* three cmds: decrypt | uncompress | recover
* two cmds: uncompress | recover
* XXX note that if there are two cmds, the first one
* XXX could be either uncompress or decrypt. Since no
* XXX code actually call uncompress_cmd/decrypt_cmd, it's ok
* XXX for header information.
* one cmds: recover
*/
if ( cmd3 == NULL) {
if (cmd2 == NULL) {
strncpy(file->recover_cmd, cmd1,
SIZEOF(file->recover_cmd) - 1);
} else {
g_snprintf(file->uncompress_cmd,
SIZEOF(file->uncompress_cmd), "%s |", cmd1);
strncpy(file->recover_cmd, cmd2,
SIZEOF(file->recover_cmd) - 1);
}
} else { /* cmd3 presents: decrypt | uncompress | recover */
g_snprintf(file->decrypt_cmd,
SIZEOF(file->decrypt_cmd), "%s |", cmd1);
g_snprintf(file->uncompress_cmd,
SIZEOF(file->uncompress_cmd), "%s |", cmd2);
strncpy(file->recover_cmd, cmd3,
SIZEOF(file->recover_cmd) - 1);
}
continue;
}
#undef SC
/* XXX complain about weird lines? */
}
out:
amfree(buf);
amfree(line1);
}
